An Extendable High Step-Up Interleaved DC–DC Converter Utilizing a Switched Capacitor Cell

A DC–DC interleaved converter with a coupled inductor is proposed in this study. This converter is capable of generating high voltage through the use of switched capacitors and additional components. It is designed to serve as an interface device in renewable energy applications. The proposed interleaved design features minimal ripple in the input current, enhancing the longevity of solar panels. This configuration can function as a single or dual-input design for boosting input power. In addition to the mentioned benefits, the proposed converter also reduces voltage stress on the components. This decrease in voltage stress results in smaller component sizes and lower conductive losses in the MOSFETs. The theoretical examination of the proposed structure includes steady-state analysis and evaluation of voltage stress on components, as well as the design of the converter. An in-depth comparison is conducted to highlight the strengths and weaknesses of the proposed structure. Following the calculations and theoretical analysis, a laboratory prototype with a 400 W power capacity is implemented to test the performance of the proposed structure.